Humidification spray device



Oct. 24, 1939. w. A. HUBBARD HUMIDIFIGATION SPRAY DEVICE Filed June 22, 1935 v2 Sheets-Sheet 1 ct. 24, 1939. w, A HUBBARD I 2,177,111

HUMIDIFICATION SPRAY DEVICE Filed 1992 22, 1935 2 she'ets-sheet 2 Patented Oct. 24, 1939 UNiTED STATES PATENT OFFICE 6 Claims.

This invention relates to a device adapted to be used for humidiiication vand vparticularly to such a device adapted to be used in a chamber which is heated at times, such as the air chamber f. in a furnace.

.Humidification is now obtained in many places heated by a furnace, by supplying liquid in the form of a spray or otherwise to the interior of said furnace and usually the chamber through which heated air passes to the rooms to be heated.

It is an object of this invention to provide a simple and inexpensive device for supplying liquid for humidiiication to a chamber, comprising means for projecting a jet of liquid into said chamber and means preferably automatically controlled for rendering said jet operative or inoperative for humidication purposes.

It is another object of this invention to provide a device comprising a nozzle for projecting a jet of liquid into a chamber to be heated, means for directing said jet to a drain when said chamber is not heated and means for rendering said last mentioned means inoperative when said chamber is heated so that the liquid of said jet r can be used for humidication.

It is a furtherrobject of the invention to provide a device comprising means for projecting a jet of liquid into a chamber, means having a surface of very small area and disposed substantially perpendicular to said jet against which said jet is projected to atomize said liquid together with provisionV for receiving said jet and directing the same to a drain so that the liquid is not atomized.

` It is still another object of the invention to provide a device comprising means for projecting a jet of liquid into a chamber together with means for intercepting said jet and directing the liquid thereof to a drain and thermostatically controlling the operation of said last mentioned means.

These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings, in which like reference characters refer to similar parts throughout the several views and in which:

' Fig. 1 is a view in vertical section through a portion of a furnace showing the application of the invention thereto;

Fig. 2 is a view in side elevation of the device of this invention;

Fig. 3 is a View in vertical section taken on line 3-3 of Fig. 2 as indicated by the arrows;

Fig. 4 is a vertical section taken on line 4 4 of Fig. 3 as indicated by the arrows;

Fig. 5 is a horizontal section taken on line 5 5 of Fig. 3 as indicated by the arrows; and

Fig. 6 is a partial horizontal section similar to Fig. 5 showing the parts in different positions.

Referring to the drawings, a portion of a furnace I is shown, which furnace is of the well known hot air type. The upper portion Illa of the re pot or chamber and the chamber IUb at the top of the furnace from which air passes to the rooms tombe heated are shown. The air reaching chamber Illb passes around the heated chamber Illa and the air is conducted to the rooms from chamber I0b through a plurality of conduits Ille, one of which is shown. The device of the invention is shown in side elevation in Fig.

1 and comprises a frame or casing II having a platel I Ia arranged as shown to be secured to the furnace wall Inc in any suitable manner as by the screws I2 extending through holes IIaa in plate IIa. The plate Ila has a recessed portion IIb adapted to extend into the furnace, the same having a rear wall with an opening IIc therein. This opening is closed by a plate Ild having a flange IIe adapted to rest on said rear wall at the bottom of said opening and said plate IId is held in place by a plurality of screws I3 extending through lugs on plate Hd into said rear wall. A pan IIf extends inwardly from the rear wall of portion IIb and has a cylindrical spout IIg extending through an opening in said wall, said pan being secured to said wall by a pair of screws I4. 'I'he spout IIg is interiorly threaded' to receive a drainV pipe I5 extending forwardly from pan IIf and then extending downwardly in front of plate I la as shown in Figs. 1 and 2. The rear wall of portion IIb has lugs IIh projecting inwardly, into which are threaded the studs I 6 extending horizontally inwardly and having reduced threaded portions at their other ends which extend through apertures in a plate I Iz', which plate abuts the shoulders formed by said reduced portions on stud I6 and said reduced portions have thereon the nuts I'I holding plate Ilz' in place. Plate Ilz' at its bottom has an oifset portion extending along the inner rear side of pan I I f and secured thereto by the headed screws I8.

A nozzle member I9 is threaded into the upper portion of the rear wall of portion IIb and held therein by the nut threaded thereon. Nozzle I9 has a discharge head I9a threaded into its inner portion, the same having a very small discharge aperture I9b. Said nozzle has a cylindrical bore extending outwardly from member |9a in which is slidable a plunger i90 having a handle rod iSd equipped at its outer end with a knob lSe having a cylindrical knurled periphery. Rod ld is slidable in a packing nut idf threaded into a packing gland iSg, in turn threaded into Vthe body of nozzle i9 and adapted to receive packing i971 engaged by member lsf. A gasket washer lQi is shown between member lg and the outer end of the nozzle body. Plunger lc has a reduced inner end in which is secured a very small rod or needle member i517' adapted to move through the aperture l9b. The body of nozzle i9 has a Jthreaded opening in one side thereof in which is secured a curved nipple 2l receiving another curved nipple 22 to which is secured a water supply pipe 23 held by a bracket 2d to plate lla, by the screws 25, said plate having a projecting boss or lug into which 'said screws are threaded. A rod 25 is secured in plate iii, the same extending through said plate and hav ing a threaded portion receiving nuts 2l' Vthereonat each side of said plate.V Rod i125. has a plane end surface 25a of quite small area which is substantially perpendicular to the axis of rod 25 and rod 26 is coaxial with aperture i919 and nozzle l5. Pan l if has a boss l ly' therein and a tube or bushing 28 is secured in said boss and extends upwardly therefrom. A shaft 2Q is journaled in bushing 28 and extends thereabove and has secured to its upper end the apertured end Sila of an arm Sil, the same being secured to shaft @ii by the set screw 3l. Portion Bda rests on the top of tube 28 and is oscillatable thereon with shaft 2S. Arm 30 has a boss 3th adjacent its other end, the same being split and having projecting portions Stic receiving a clampingscrew 32. Boss 39h is bored and has clamped therein by the screw 32 a tube or conduit 33 which extends upwardly and has an open lower end dis'- posed over pan lif. The upper end cf tube is curved toward nozzle i9 and has a portion cut away at the side thereof so that the tube is open and the'upper curved portion thereof forms a deector. Shaft 25 extends below pan Elf and has secured to its lower end by a screw gli, one end of a helical strip 35 which will be made of thermostatic bimetallic construction. The upper end of member 35 is secured to a bossi! ik by a screw 35, which boss extends downwardly from the bottom of pan l i f concentric with boss lli. The member 35 in addition to being ka thermostatic member acts as a spring and normally holds arm 3D in position with its end against a stop lug Ilm formedon the rear side of porn tion lib. Arm Si@ can be adjusted on' shaft 29 so that thesame will be moved at diiierent temperatures.

In operation, water will be supplied through pipe 23 and this pipe will be connected to some source of water, such as th#l city mains or the piped water supply in use. Water is constantly supplied to pipe 23 and there is rio necessity for a regulating valve for said pipe. Water is thus projected by nozzle i9 through aperture Yi911 inn wardly into the chamber in which the device is disposed. As stated tube 33 normally occupies the position shown in Figs. 4 and 5 and the iet of liquid projected by nozzle lQris deiiected by the curved deector 33a of tube and the liquid of the jet is directed downwardly into tube 83 and delivered into pan l l f from whence it passes through pipe l5 to a suitable drain. The elongated side opening intube 33 is provided to prevent any whistling effect. The liquid passes noiselessly into tube 33 and into pan i lf. When l l5. operate at a desired temperature which will vary the furnace or other chamber is heated and the temperature rises to a certain point thermostat 35 operates to turn shaft 29 and this swings arm 3@ in aV counter-clockwise direction so that tube 33 and its deilector 33a. are moved out of the path of the jet projected from nozzle i9 as shown in Fig. 6 or in dotted lines in Fig. y5. The jet from nozzle i9 is then directed forcibly against the surface 26a of rod 25 and the liquid is broken up into a very fine mist or spray. This mist is taken up by the heated air which is passing through the chamber, the air is properly humid- Should any liquid drop from rod 26 it will be caught in the pan l if and pass out the drain pipe The thermostat 35 will, of course, be set to with the furnaceor device in which the invention is used. In the old type of furnace the temperature in the hot air ,chamber varied from 200 to 350 degrees but in the later type of furnace where .air is circulated'in .theffurnace jacket by liiled and is then carried to the rooms to be heated.V

a blower the temperaturevusually varies from I to 250 degrees F. Water cannot be effectivelyv sprayed into a cold chamber for humidication purposes and Ait is desirable and eiiicient to not spray the water into the chamber unless the temperature of the furnace is suflicient to take up the liquid or vapor. When the temperature is low there is usually no necessity for liquid to be supplied to the air. The nozzle IS can be occasion--V ally cleared of any sediment or accumulation in the discharge passage IGZ) by pushing in the rod ld, by means of knob lSe which willr project needle E57' through said aperture.

From the above description it is seen that ap plicant has provided a simple and eflicientdevice which will eectively supply liquid for humidication to a heated chamber and will be automatically controlled. The device can be easily applied to a furnace or other wall and plate Ha will be made to lit against the wall whether it be curved or plane. It has been apractice with many such devices to have a magnetically controlled valve on the water supply pipe which is operated by a thermostat. This equipment is expensive and is dispensed within the present device. Water is continually supplied to applicants nozzle i9 and the amount of'water not used is so small that the cost is negligible. Access can be had tothe inside of portion IIb byV removal of the cover plate Hd'. The parts are all of,` simple construction and easilyaccessible for removal if necessary. The device is easily in-V stalled and after being installed operates without attention. The device has been amply demonstrated in actual practice and found to be very successful and eiiicient. The device also operates noiselessly when the jet from nozzle I9 strikes surface 26a to atomize the liquid. It is obvious that applicants apparatus above disclosed may be used with liquids other than water.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope Vof applicants invention, which generally stated, consists in a device capable of carrying out the objects above set forth in the parts and combinations of parts disclosed and deiined in the appended claims.

What is claimed is:

l. A humidifying device of the class described having in combination, a nozzle for projecting` a fine jet of aqueous liquid, an abutment against which said jet may strike to atomize said liquid,l

a drain means, a deflecting means for directing said jet into said drain means movable into operative position between said nozzle land abutment and into inoperative position out of alinement with said jet and abutment.

2. A humidifying device of the class described having in combination, means for projecting aqueous liquid in a ne jet into a chamber, a member against which said liquid impacts for atomizing said liquid, a deflector positioned in the path of said jet to deflect the same to a drain, said deflector being movable out of the path of vsaid jet and thermostatic means for moving said deflector out of the path of said liquid.

3. A humidifying device of the class described having in combination, a chamber, means for heating said chamber, a nozzle forl projecting aqueous liquid in a ne jet into said chamber, a member against which said liquid is projected for atomizing the same, a drain means, means movable between said nozzle and member and into and out of the path of said jet for intercepting and receiving said jet and directing the same to said drain means and automatically acting means for moving said last mentioned means.

4. A humidifying device of the class described having in combination, a nozzle for projecting aqueous liquid in the form of a fine jet, a member having a surface disposedsubstantially perpendicular to said jet against which the same is projected to atomize the liquid of said jet, a drain, means comprising a deflector for intercepting said jet and receiving the liquid thereof and directing the same to said drain, a shaft upon which said means is mounted so that said means is swingable about the axis of said shaft to and from a position between said nozzle and member, a thermostatic means connected to said shaft for turning the same and moving said means out of the path of said jet.

5. A device of the class described having in combination, a casing comprising a plate adapted to be mounted on the Wall of a furnace, a drain pan carried at one side of said plate, a drain pipe leading from said pan, a nozzle mounted in said plate above said pan constructed to project aqueous liquid in the form of a jet away from said plate, a shaft journaled in said casing, a tube mounted on said shaft having an open upper end adapted to move into the path of said aqueous liquid to receive the same, said tube leading to said drain'pan, means for oscillating said shaft to move the upper end of said tube out of the path of said liquid and a member against which said jet strikes to atomize said liquid when said tube is moved out of the path of said jet.

6. A device of the class described having in combination, a chamber, means for heating said chamber, said chamber having a wall with an opening therethrough, a casing adapted to project through said opening and having a plate adapted to engage the outer side of said Wall about said opening, means for securing said plate to said wall, a drain pan secured to said casing and disposed within said chamber, a nozzle carried by said casing for projecting water in a fine jet into said chamber, a shaft journaled for oscillation adjacent said drain pan, an arm secured to said shaft, a vertically disposed tube carried by said arm having an elongated opening at its upper end, said tube being curved at its upper end so that said opening is on its concave side and said opening being disposed in the path of said jet so that said tube receives the liquid thereof and directs the same into said drain pan, a thermostatic member fixedly secured at one end and secured at its other end to said shaft for oscillating said shaft and swinging said tube to move its upper end out of the line of said jet and a member having a surface disposed perpendicular to said jet against which said jet impinges when said tube is moved out of the path thereof.

WILLIAM A. HUBBARD. 

